{"$schema":"https://raw.githubusercontent.com/jsonresume/resume-schema/v1.0.0/schema.json","basics":{"name":"Isaac Oluwayinka","label":"Software Engineer & Architect","image":"https://res.cloudinary.com/ds1mnqffm/image/upload/f_jpg,q_auto,c_limit,w_800/portfolio/profile/portrait","email":"hello@ykaycode.com","url":"https://ykaycode.com","summary":"I've shipped production software for over seven years. Today I lead engineering for Lone Star Civil's AI-powered platform on AWS: NestJS, PostgreSQL, document processing and zero-downtime deploys.","profiles":[{"network":"GitHub","url":"https://github.com/flexy4vibez"},{"network":"X","url":"https://x.com/oluwayinka18"}]},"work":[{"name":"Neli Arabi GmbH","position":"Lead Backend Engineer and pod lead","location":"Berlin, Germany (remote)","startDate":"2026-04-01","endDate":"2026-10-01","summary":"I led a backend pod building a B2B ERP platform for complex multi-entity operations.","highlights":["Led the pod from April to October 2026.","Helped build the platform's structured workflows, data control, integrations and reporting.","Built private enterprise review into the platform."]},{"name":"Lone Star Civil","position":"IT Manager and Lead Software Engineer","location":"San Antonio, Texas (remote)","startDate":"2025-03-01","summary":"I lead the design, build and deployment of a contractor-management platform with AI features, and I own the company's software and cloud infrastructure.","highlights":["Run the backend on AWS ECS Fargate with Aurora Serverless v2 PostgreSQL, S3 and CodeBuild pipelines, deploying without downtime.","Built a NestJS and TypeScript REST API with more than 50 endpoints, JWT authentication, role-based access and per-company data isolation.","Added features on the Claude API: streamed answers, tool use and document processing for PDF, DOCX, XLSX and images, leading to automated bids, cost estimates and price comparison.","Model the data in Prisma on PostgreSQL, including schema design, query tuning and migrations for construction-domain data."]},{"name":"TheSlimPrep","position":"Part-time Software Engineer","location":"Canada (remote)","startDate":"2024-05-01","endDate":"2026-03-01","summary":"I built web applications and REST APIs for several platforms on a multi-tenant architecture, alongside my full-time work.","highlights":["Built web apps and REST APIs in Node.js and React for multiple platforms on a multi-tenant architecture.","Designed SQL schemas and indexes, improving data retrieval performance by 40%.","Set up Docker development environments and deployment workflows, which sped up onboarding and made CI/CD reproducible.","Added JWT authentication and role-based access to multi-tenant SaaS features.","Worked in a cross-functional Agile team."]},{"name":"Independent","position":"Full-stack developer and consultant","location":"Remote","startDate":"2019-02-01","endDate":"2023-03-01","summary":"Delivered web applications for clients in education, e-commerce and logistics, from architecture to deployment.","highlights":["Wrote custom backends in PHP with Laravel and in Node.js: authentication, admin dashboards, reporting and API integrations.","Deployed on AWS with DNS, SSL, Nginx and automated backups.","Advised small businesses on technical architecture as they moved online."]}],"education":[{"institution":"Obafemi Awolowo University, Ile-Ife","studyType":"BSc Geology","startDate":"2014","endDate":"2019"}],"skills":[{"name":"Languages","keywords":["TypeScript","JavaScript","Python","PHP","SQL","Kotlin","Swift","Bash","HTML5","CSS3"]},{"name":"Backend","keywords":["NestJS","Node.js","Express","Laravel","FastAPI"]},{"name":"Frontend","keywords":["React","Next.js","Tailwind CSS","Bootstrap","Vite"]},{"name":"Data","keywords":["PostgreSQL","MySQL","Prisma","Redis","SQLite","SQLAlchemy"]},{"name":"Cloud and delivery","keywords":["AWS","Docker","GitHub Actions","Vercel","Nginx","Render","AWS ECS Fargate","AWS Aurora","AWS S3","AWS ECR","AWS CodeBuild","AWS ALB","AWS CodePipeline"]},{"name":"Mobile","keywords":["Jetpack Compose","Room","SwiftUI","UIKit","Combine","Core Data"]},{"name":"AI","keywords":["Claude API","OpenAI API","Gemini API"]},{"name":"Payments","keywords":["Stripe","Flutterwave","Paystack"]},{"name":"Auth and security","keywords":["JWT","OAuth 2.0","RBAC"]},{"name":"APIs and integration","keywords":["REST API design","SSE streaming","Postman","Axios"]},{"name":"Background processing","keywords":["Celery","Job queues","Async task processing","Event-driven architecture"]},{"name":"Monitoring and observability","keywords":["AWS CloudWatch","Structured logging","Health checks"]}]}